World Blog by humble servant. MLB Market Calibration & Execution Debrief Core Model Calibration vs. Live Outcomes.

MLB Market Calibration & Execution Debrief

1. Core Model Calibration vs. Live Outcomes

Matchup / Target	Live Line	Break-Even %	10k Sim Win %	Value Edge	Final Score	Result
CWS @ CLE Over 6.5	+114	46.7%	61.4%	+14.7%	CWS 4, CLE 3 (7 runs)	WON
NYY @ TB Over 6.5	+113	46.9%	55.7%	+8.8%	TB 5, NYY 2 (7 runs)	WON
Chicago White Sox ML	+129	43.7%	43.8%	Fair Value	CWS won 4–3	WON
Tampa Bay Rays ML	+102	49.5%	46.4%	Fair Value	TB won 5–2	WON

2. Ticket Settlement Ledger

Ticket / Position	Structure	Odds	Risk Allocation	Gross Payout	Net Profit	Result
White Sox Straight ML	Straight	+129	$40.00	$91.60	+$51.60	WON
Rays Straight ML	Straight	+102	$40.00	$80.80	+$40.80	WON
2-Team Underdog ML Parlay	CWS ML + TB ML	+363	$20.00	$92.60	+$72.60	WON
Cross-Game Pair 1 (Totals)	CWS Over 6.5 + TB Over 6.5	+356	Unit / Round Robin	Multiplier	Full Hit	WON
Cross-Game Pair 2 (Total + Dog)	CWS Over 6.5 + TB ML	+332	Unit / Round Robin	Multiplier	Full Hit	WON
Cross-Game Pair 3 (Total + Dog)	TB Over 6.5 + CWS ML	+388	Unit / Round Robin	Multiplier	Full Hit	WON
Cross-Game Pair 4 (ML Dog Pair)	CWS ML + TB ML	+363	Unit / Round Robin	Multiplier	Full Hit	WON

3. Strategic Execution Takeaways

• Dodging the Run-Line Tax:

  • When the books pushed White Sox +1.5 to -181 and Rays +1.5 to -180, the required break-even jumped to 64.4%. The 10,000-sim model capped their cover probability at 61.6% and 63.9%. Laying heavy vig for a single run was negative equity. Passing on -180 preserved capital.

• Capital Migration to True Value:

  • Capital freed from avoiding juiced run lines was funneled directly into the totals (+114 and +113). Books priced the lines expecting low-scoring playoff pitching duels under 6.5, whereas the distribution showed a 55% to 61% likelihood to clear 6.5. Both finished at 7 runs.

• Treating the Board Like an Intraday Order Book:

  • Odds movement changes the underlying math. Recalibrating the live numbers throughout the day pinpointed the exact inflection point where the run-line edge died and the plus-money total edges expanded.

• Clean Cross-Game Structuring:

  • By avoiding correlated same-game combinations that trigger bookmaker limits or rejections, the 4-pair cross-game round robin ran without friction, producing a clean sweep across all tickets.